1, for the image is made of PDF (especially scanned pieces made of pdf) file
The following software is recommended for conversion
(1) Fewer pages with Cajviewer 7.0 (full version with OCR), support directly open PDF file, identify text. Download address and detailed description:
(2) More pages can be used Readiris Corporate 12 software to identify (need to install the Asian language Pack, or do not recognize Chinese). Download address and detailed description:
More pages can also be abbyy FineReader 9 or more than 9 version (with Simplified Chinese version) to identify the conversion. Download the address and detailed description:.
The recognition rate of this software is very high, the converted layout is basically the same as the original, you can manually select the manual box identification, the disadvantage is that the recognition speed is slow.
The above several software's recognition rate all also can, does not suggest what Office component recognizes, too troublesome recognition rate is also not high.
2, for some do not allow the modification of the PDF file (is encrypted with permission pdf), then the first to remove the password or remove the digital certificate, in order to follow the above two steps to do.